When Ginny mentioned at the last minute that she had invited Theodore Nott over for dinner, Hermione wasn't entirely sure what to make of it. Granted, they had just been to a party thrown by Blaise Zabini - who she had previously had lunch with, no less - but it was still rather odd in her mind.
Deciding to leave them to their own devices, she thought a trip to the Lion's Den may be in order. It would most certainly make for more of a pleasant evening than locking herself in her room all night, regardless of whether or not Ron and Harry were even home.
Apparating straight to their flat, she noted that at least one of them was home. Hermione smiled at Harry and then sat herself down on the couch beside him. "I don't think that's any of your business. But I'm not here to see Ron anyway, I'm just vacating the flat so I don't bother Ginny and Theodore whilst they have dinner."